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參數(shù)資料
| 型號： | LTC4413 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 熱敏電阻 |
| 英文描述： | Standalone Linear Li-lon Battery Charger with Thermistor Input |
| 中文描述： | 獨(dú)立線性鋰離子電池充電器熱敏電阻輸入 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 154K |
| 代理商： | LTC4413 |
9
LTC4413
4413f
OPERATIOU
occurs. During overcurrent operation, the power consump-
tion of the LTC4413 will be large, and is likely to cause an
overtemperature condition as the internal die temperature
exceeds the thermal shutdown temperature.
Overtemperature Protection
The overtemperature condition is detected when the inter-
nal die temperature increases beyond 150
°
C. An overtem-
perature condition will cause the gate amplifiers (A and B)
as well as the two P-channel MOSFETs (PA and PB) to be
shut off. When the internal die temperature cools to below
140
°
C, the amplifiers will turn on and revert to normal
operation. Note that prolonged operation under overtem-
perature conditions will degrade reliability.
Channel Selection and Status Output
Two active-high control pins independently turn off the
two ideal diodes contained within the LTC4413, control-
ling the operation mode as described by Table 1. When the
selected channel is reverse biased, or the LTC4413 is put
into low power standby, the status signal indicates this
condition with a low voltage.
Table 1. Mode Control
ENB1
Low
ENB2
Low
STATE
Diode OR (NB: The Two Outputs are Not Connected
Internal to the Device)
Diode A = Enabled, Diode B = Disabled
Diode A = Disabled, Diode B = Enabled
All 0ff (Low Power Standby)
Low
High
High
High
Low
High
Table 2. STAT Output Pin Funtion
ENB1
ENB2
Low
Low
CONDITIONS
Diode A Forward Bias,
Diode B Forward Bias
Diode A Forward Bias,
Diode B Reverse Bias
Diode A Reverse Bias,
Diode B Forward Bias
Diode A Reverse Bias,
Diode B Reverse Bias
Diode A Forward Bias,
Diode B Disabled
Diode A Reverse Bias,
Diode B Disabled
Diode A Disabled,
Diode B Forward Bias
Diode A Disabled
Diode B Reverse Bias
Diode A Disabled,
Diode B Disabled
STAT
I
SNK
= 0
μ
A
I
SNK
= 0
μ
A
I
SNK
= 9
μ
A
I
SNK
= 9
μ
A
Low
High
I
SNK
= 0
μ
A
I
SNK
= 9
μ
A
High
Low
I
SNK
= 0
μ
A
I
SNK
= 9
μ
A
High
High
I
SNK
= 9
μ
A
The function of the STAT pin depends on the mode that has
been selected. The following table describes the STAT pin
output current as a function of the mode selected, as well
as the conduction state of the two diodes.
APPLICATIU
Introduction
The LTC4413 is intended for power control applications
that include low loss diode ORing, fully automatic
switchover from a primary to an auxiliary source of power,
microcontroller controlled switchover from a primary to
an auxiliary source of power, load sharing between two or
more batteries, charging of multiple batteries from a
single charger and high side power switching.
W
U
U
Dual Battery Load Sharing with Automatic Switchover
to a Wall Adapter
An application circuit for dual battery load sharing with
automatic switchover of load from batteries to a wall adapter
is shown in Figure 3. When the wall adapter is not present,
whichever battery that has the higher voltage will provide
the load current until it has discharged to the voltage of the
other battery. The load will then be shared between the two
batteries according to the capacity of each battery. The
higher capacity battery will provide proportionally higher
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| LTC4413EDD | 制造商:Linear Technology 功能描述:Dual Ideal Diodes 10-Pin DFN EP |
| LTC4413EDD#PBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4413EDD#PBF | 制造商:Linear Technology 功能描述:Power Management ICs |
| LTC4413EDD#TR | 制造商:Linear Technology 功能描述:Dual Ideal Diodes 10-Pin DFN EP T/R |
| LTC4413EDD#TRPBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
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